Incinerator



April 1, 1930. H. HEITMAN 1,753,008

INC INERATOR Filed Jan. 28, 1929 2 Sheets-Sheet 1 4770mm K H. HEITMAN April 1, 1930..

INC INERATOR Filed Jan. 28, 1929 2 Sheets-Sheet 2 QMV IHIIHllIHlHIIHIIIHIIIH i tv MW Patented Apr. 1, 1930 UNETED STATES PATENT QFtCE HERBERT HEITMAN, OF WOODI-IAVEN, NEVT YORK, ASSIGNOR TO THE FREDK PAGE CONTRACTING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK INCINERATOR Application filed January 28, 1929. Serial No. 335,427.

The principal objects of the present invention are to provide for complete destruction of garbage and practically all kinds of mixed refuse by combustion; to provide an efficient, durable and reliable incinerator; to provide a comparatively inexpensive construction for an incinerator adapted to accomplish the objects above stated; and to prolong the combustion throughout a path of considerable length, thus insuring all products of combustion to be completely consumed, including all odors, before entering the stack.

An incinerator of the invention includes an enclosed chamber having through the front portion of the roof a charging inlet adapted to exclude air and having at the lower part of its rear portion a stack flue, a fire box arranged at the front portion of the chamber beneath the inlet, a bridge wall between the flue and fire box, a series of spaced arches spanning the fire box and also the stack flue and providing a platform over the the box for primary heating and combustion and a circuitous path over the stack flue for complete combustion, and air ducts to the interior of the chamber above the arches for the introduction of secondary air for effecting complete combustion. The operation is such that the garbage or other material may be said to float, and be stoked manually, if necessary, from time to time, while burning from the top of the arches over the fire box to completely burn over the other arches.

The invention also comprises the improvements to be presently described and finally claimed.

In the following description reference will be made to the accompanying drawings forming part hereof and in which Figure 1 is a view principally in central section.

Fig. 2 is a horizontal sectional view taken on the line 22 of Fig. 1, and

Fig. 3 is a vertical sectional view taken on the line 33 of Fig. 2.

In the drawings 1 generally indicates an enclosed chamber constructed of suitable refractory material and, as shown, provided with buck stays 2, and reinforcing angle sections 2 arranged horizontally along the walls. Through the front portion of the roof of the chamber 1 there is a charging inlet 3, and the inlet 3 is constructed to exclude air. As shown it is closed except for a slight vent 4 at the-top, and there is provided means in dicated at 5 for introducing the material to be burned and for excluding air. At the lower part ofthe rear of the chamber 1 there is a stack flue 6. This communicates with a stack 7 and with a cleanout or ash pit 8. 9 is a fire box and it is arranged at thefront portion of the chamber beneath the inlet 3. 10'

is a bridge wall'arranged between the flue 6 and the fire box 9. There are provisions for introducing a supply of preheated air into the ashpit from ducts 11 which are exposed to the radiant heat of the firebrick lining on the back of the bridge wall, to mix with the cold air being introduced through the ashpit doors 20 to aid combustion of materials on cast iron grates in firebox 9. These ducts 11 are provided with dampers 12. There is a series of spaced arches 13 spanning the fire box,and arches 14 and 15 also span the flue 6, thus there is provided a platform over the re box for primary heating and combustion and there is also provided a circuitous path over the stack flue for secondary heating and complete combustion.

One of the arches 15 constitutes a bafiie arch. As shownthe arches 13 range lengthwise of the chamber and spring from the bridge wall and the front wall of the fire box andare comparatively fiat. The arches 14 and 15' spring from the side walls of. the chamber, and the arches 14 are arranged stepwise 'in one direction, and the arches 15 are arrangedstepwise in the other direction. There are air ducts' l6 to the interior of the chamber above the arches for the introduc tion of preheated secondary air to aid'coin plete combustion in chamber 1. These air ducts 16 are shown as provided at the front of the furnace with dampers 17 18 indicates cleanout, stoking and inspection openings normally closed by cast iron doors lined with refractory material composed of high tem perature cement and crushed fire brick.

Thematerial to be incinerated will be retion, or by the heat radiated from the refractory arches and wall-linings which are 1n-- candescent by the absorption of heat. As the garbage or wet materials to be burned dries, it is carried from bars 13 over platform '10 and on to arches 14, where it is finally consinned, except for those particles which fall through spaces between arches which will be totally burned on batlle arches 15 and 15, so that before reaching the stack flue 6 complete combustion has occurred and the residual solid matter in the nature of ash remains in the flue 6 from which it can be removed through the provisions 8. It may be pointed out that the combustion isprolonged and that the products upon reaching the stack are comparatively cool. It may be remarked that the arches 13 and 14 are flush with the to of the bridge wall.

it will be obvious to those skilled in the art to which the invention relates that modi fieations may be made in details of construction and arrangement and matters of mere form without departing from the spirit of the invention which is not limited to such matters or otherwise than the prior art and the appended claims may require.

I claim:

1. In an incinerator the combination of an enclosed chamber having throu h the front portion of its roof a charging inlet arranged to exclude air and having at the lower part of its rear portion a stack flue, a fire box, arranged at the front portion of the chamber beneath the inlet, a bridge Wall between the fine and fire box, a series of spaced arches spanning the fire box and providing a platforinover the fire box for primary heating and combustion and a second series of spaced arches spanning the stack flue and providing a circuitous path over the stack flue for sec ondary heating and complete combustion, and a duct for the introduction of secondary air into the interior .of the chamber above the arches to aid complete combustion.

2. In an incinerator the, combination of an enclosed chamber having through the front portion of its, roof a charging inlet arranged to exclude air and having at the lower part of itsrear portion a stack due, a fire box arranged at the front portion of the chamber beneath the inlet, a bridge wall between the flue and fire box, a series of spaced arches springing from the top of the bridge wall and from the front Wall of the fire box, a second series of spaced arches springing from the side Walls of the chamber and spanning the stack flue and arranged stepwise, air ducts to the fire box, air ducts to the chamber above and in rear of the bridge wall, and damper means for the respective air ducts;

3. In an incinerator the combinationof an enclosed chamber having through the front portion of its roof a charging inlet arranged to exclude air and having at the lower part of its rear portion a stack flue, a fire box arranged at the front portion of the chamber beneath the inlet, a bridge wall between the fine and fire box, a series of spaced arches spanning the fire box, a series of spaced and stepwise arranged arches spanning the stack fine and including a battle arch, and means for supplying air to the fire box and to the chamber above the arches.

4. In an incinerator the combination of an enclosed chamber having through the front portion of its roof a charging inlet arranged to exclude air and having at the lower part of its rear aortion a stack fine a fire box arranged-at the front portion of the chamber beneath theinlet, a series of spaced arches spanning the fire box, a second series of spaced arches spanning the stack flue, a bridge wall terminating flush with said arches and arranged between the flue and fire box, and means for introducing air into the fire box and into the chamber above the arches.

5. In an incinerator the combination of an enclosed chamber having through the front portion of its roof a charging inlet arranged to exclude air and having at the lower part of its rear portion a stack flue, a fire box arranged at the front. portion of the chamber,.

a bridge wall between the flue and fire box,

a series of spaced arches springing from the top of the bridge wall and from the front wall of the fire box, a second series of spaced arches springing from the side walls of the chamber and spanning the stack flue and arranged stepwise, air ducts to the fire box, air ducts to the chamber above and in rear of the bridge wall, and damper means for the respective air ducts.

HERBERT HEITMAN. 

